Engine plenum chamber



FIG. 1 is a perspective view of a first embodiment of an engine plenum chamber according to our new and ornamental design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a top plan view of a second embodiment of an engine plenum chamber according to our new and ornamental design;

FIG. 9 is a perspective view of a third embodiment of an engine plenum chamber according to our new and ornamental design;

FIG. 10 is a rear elevation view thereof;

FIG. 11 is a front elevation view thereof;

FIG. 12 is a right side elevation view thereof;

FIG. 13 is a left side elevation view thereof;

FIG. 14 is a top plan view thereof;

FIG. 15 is a bottom plan view thereof; and,

FIG. 16 is a top plan view of a fourth embodiment of an engine plenum chamber according to our new and ornamental design.

The broken lines between the solid and broken line portions of the engine plenum chamber are boundaries of the claimed design, and as such, form no part of the claimed design. The broken lines beyond the boundaries of the design illustrate environment and form no part of the claimed design. In FIGS. 8 and 16, the stippled areas represent areas of contrasting appearance to the adjacent non-stippled areas. The second embodiment of the engine plenum chamber is identical to the first embodiment of the engine plenum chamber in all respects, except for the stippled area having the above-noted contrasting appearance. The fourth embodiment of the engine plenum chamber is identical to the third embodiment of the engine plenum chamber in all respects, except for the stippled area having the above-noted contrasting appearance. 

CLAIM The ornamental design for an engine plenum chamber, as shown and described. 